loop7: detected capacity change from 0 to 32768
ocfs2: Mounting device (7,7) on (node local, slot 0) with writeback data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1159!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 10955 Comm: syz.7.1088 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 d2 a1 9f 8d ba 6a 04 00 00 48 c7 c1 40 52 ca 8b e8 c8 52 1b 00 90 0f 0b e8 e0 5d 26 fe 90 <0f> 0b e8 d8 5d 26 fe 90 0f 0b e8 d0 5d 26 fe 90 0f 0b e8 c8 5d 26
RSP: 0018:ffffc9000310ee60 EFLAGS: 00010283
RAX: ffffffff83995f80 RBX: ffff88801b3ee014 RCX: 0000000000080000
RDX: ffffc9000f383000 RSI: 00000000000008df RDI: 00000000000008e0
RBP: ffffc9000310f190 R08: ffff88802bb0eca3 R09: 1ffff11005761d94
R10: dffffc0000000000 R11: ffffed1005761d95 R12: ffff88803448c000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801b3ee014
FS:  00007fe56fe436c0(0000) GS:ffff8880b8612000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c386110 CR3: 00000000226ce000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_write_begin_nolock+0x31a3/0x4340
 ocfs2_write_begin+0x1bb/0x310
 generic_perform_write+0x2c5/0x900
 ocfs2_file_write_iter+0x157a/0x1d10
 vfs_write+0x5c9/0xb30
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe56ef8eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe56fe43038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe56f1d5fa0 RCX: 00007fe56ef8eba9
RDX: 00000000fffffdab RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fe56f011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe56f1d6038 R14: 00007fe56f1d5fa0 R15: 00007fff997f5ee8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 d2 a1 9f 8d ba 6a 04 00 00 48 c7 c1 40 52 ca 8b e8 c8 52 1b 00 90 0f 0b e8 e0 5d 26 fe 90 <0f> 0b e8 d8 5d 26 fe 90 0f 0b e8 d0 5d 26 fe 90 0f 0b e8 c8 5d 26
RSP: 0018:ffffc9000310ee60 EFLAGS: 00010283
RAX: ffffffff83995f80 RBX: ffff88801b3ee014 RCX: 0000000000080000
RDX: ffffc9000f383000 RSI: 00000000000008df RDI: 00000000000008e0
RBP: ffffc9000310f190 R08: ffff88802bb0eca3 R09: 1ffff11005761d94
R10: dffffc0000000000 R11: ffffed1005761d95 R12: ffff88803448c000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801b3ee014
FS:  00007fe56fe436c0(0000) GS:ffff8880b8612000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe56540d000 CR3: 00000000226ce000 CR4: 00000000000006f0
